diff --git a/src/diff.c b/src/diff.c
index 1df3f41..b0bb29a 100644
--- a/src/diff.c
+++ b/src/diff.c
@@ -953,7 +953,7 @@ static char const * const option_help_msgid[] = {
   "",
   N_("-p, --show-c-function         show which C function each change is in"),
   N_("-F, --show-function-line=RE   show the most recent line matching RE"),
-  N_("    --label LABEL             use LABEL instead of file name and timestamp\n"
+  N_("-L, --label LABEL             use LABEL instead of file name and timestamp\n"
      "                                (can be repeated)"),
   "",
   N_("-t, --expand-tabs             expand tabs to spaces in output"),